5.40 I love this song a lot because it has a sweet ____ .
(A) noise (B) melody (C) flour (D) waist

6. “Stay inside” is no longer a safe way to escape from unhealthful air. Recent studies have shown that indoor air pollution is almost always two to five times worse than outside pollution. Buildings create their own pollution, and the air
inside many homes, office buildings, and schools is full of pollutants including chemicals, bacteria, and smoke. These pollutants are causing a group of unpleasant and dangerous symptoms such as eye or throat discomfort, headache, dizziness, and tiredness, which experts call “sick building syndrome.”
There is a possible solution to the problem of “sick” buildings. A scientist at NASA was trying to find ways to clean the air in space stations. He discovered that houseplants actually remove pollutants from the air. But we don’t know
enough yet. There are many questions. For instance, which pollutants can plants remove? Which can’t they remove?
How many plants are necessary to clean the air in the room? When we are able to answer these questions, we might find that plants offer an important pollution-control system for the 21st century.
【題組】41 The phrase “sick buildings” refers to the buildings which ____ .
(A) are unfriendly to the disabled
(B) are about to fall down
(C) provide a place for the sick to stay in
(D) have indoor air quality problems

7.【題組】42 How would you summarize the first paragraph?
(A) Domestic pollution poses greater risk to health than we have thought.
(B) Indoor pollution causes discomfort.
(C) Walking down the street is safer than staying home.
(D) We are advised to open windows to bring fresh air into the house.

8.【題組】43 According to the article, which of the following statements is true?
(A) A scientist at NASA advised us to return to nature.
(B) Growing houseplants is a possible way to reduce indoor air pollution.
(C) Houseplants can make home look more attractive.
(D) Houseplants could be a source of domestic pollution.

9.【題組】44 According to the article, the word “pollutant” refers to the substance which ____.
(A) prevents bacteria from growing
(B)is harmful to the environment and health
(C) slows down the growth of houseplants
(D) is created at space stations

10.【題組】45 The most appropriate title for the passage would be “____.”
(A) Sick Building Syndrome
(B)The Cooperation of Science and Nature
(C) Indoor Air Pollution Problem and Its Solution
(D) Houseplants and Their Use

11.There is very little information about the great Master in the history of Chinese education, Confucius (551-479 BC), and his writings. He had many students, or disciples. Most of ______46______ scholars know today comes from the writings of the students who studied under Confucius. ______47______ his death, a few of his students began to record the teachings of Confucius. They also tried to ______48______ some of the history texts and poetry that Confucius edited. However, ______49______ all of the writings that have been attributed to Confucius, we are still not completely sure ______50______ parts were actually written by Confucius himself. Despite the uncertainty, future scholars will continue the task of keeping and exploring Confucius’s teachings.
【題組】46 (A) what (B) how (C) those (D) which